Ryan,
When I saw your thread title, I groaned inwardly - yet another grumble about the cost and whether it will all be worth in it the end. Instead I was pleasantly surprised - someone who is interested in giving something back into the aviation knowledge pool, who recognises that there is more than one route to job satisfaction in aviation.
From my perspective, as someone who instructed for 300+/- hours and definitely does not have the teaching instinct, I think natural-born instructors are a breed apart, and are a real asset to aviation on the whole. If you have the inclination to teach, you are already 50% ahead of a lot of folks who are using instructing, like I did, as a means to and end.
Don't forget there's more than one teaching job. You could always look into instructing for Simuflite or FlightSafety as well. Then teach in your own plane in your spare time?